Allowing Attachments To Launch Applications; Controlling Access To Referenced Files And Xobjects - Adobe 22002486 User Manual

Acrobat 9 Family of Products
Security Feature User Guide

9.5.4 Allowing Attachments to Launch Applications

The Trust Manager enables users to control whether or not non-PDF attachments can open with other
applications. By default, this option is enabled so that common file types such as .
application's black list) can be easily opened in the appropriate application.
To set attachment preferences:
1. Choose Edit > Preferences (Windows) or Acrobat > Preferences (Macintosh).
2. Select Trust Manager in the Categories panel.
3. Configure Allow opening of non-PDF file attachments with external applications
Checked: Default. The application uses its stored black list to determine whether Acrobat should let

the attachment invoke the launch an application action so the attachment can be opened.
Unchecked: Clicking or opening an attachment will never result in launching it's associated viewing

application. Use this option if a higher level of security is needed.

9.6 Controlling Access to Referenced Files and XObjects

Your application can inform you when a PDF file is attempting to access external content identified as a
stream object by flags as specified in the PDF Reference. For example, a URL might point to an image
external to the document. Only PDF developers create PDF files with streams, so you may not need to
enable access to external content.
Silently transmitting data represents a security risk since malicious content can be transferred whenever
the application communicates with an external source. Therefore, you may want to disable this feature.
To configure external content access:
1. Choose Edit > Preferences (Windows) or Acrobat > Preferences (Macintosh).
2. Select Page Display in the Categories panel.
3. Configure the Reference XObjects View Mode panel:
Set Show reference XObject targets to:




4. Set the location of referenced files (if any).
Figure 102 Attachment panel in Trust Manager
Always
Never
Only PDF/X-5 compliant ones
External Content and Document Security
Allowing Attachments to Launch Applications
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(not on the
(Figure 102):